This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 27 |
| 5 | 81 |
| 6 | 99 |
| 7 | 729 |
| 8 | 297 |
| 9 | 1089 |
| 10 | 891 |
| 11 | 59049 |
| 12 | 1683 |
| 13 | 531441 |
| 14 | 8019 |
| 15 | 9801 |
| 16 | 5049 |
| 17 | 43046721 |
| 18 | 18513 |
| 19 | 387420489 |
| 20 | 15147 |
| 21 | 88209 |
| 22 | 649539 |
| 23 | 31381059609 |
| 24 | 31977 |
| 25 | 1185921 |
| 26 | 5845851 |
| 27 | 314721 |
| 28 | 136323 |
| 29 | 22876792454961 |
| 30 | 166617 |
| 31 | 205891132094649 |
| 32 | 95931 |
| 33 | 7144929 |
| 34 | 473513931 |
| 35 | 10673289 |
| 36 | 351747 |
| 37 | 150094635296999121 |